| 摘要 |
PURPOSE:The titled composition, obtained by blending a specific polypropylene polymer prepared by polymerizing propylene in the presence of a stereoregular catalyst with a specific amount of a specified ester, having improved hardly whitening property, impact resistance and rigidity and suitable for automobiles, household appliances, etc. CONSTITUTION:A propylene polymer composition obtained by blending (A) 100pts.wt. propylene polymer, polymerized by a multistage polymerization method using a stereoregular catalyst, e.g. a mixture of a transition metal halide compound with an organoaluminum compound, and consisting of (A1) 50-94wt%, preferably 60-85wt% propylene homopolymer having 0.5-2.5dl/g intrinsic viscosity, (A2) 3-30wt%, preferably 5-25wt% propylene homopolymer having >=2.5dl/g intrinsic viscosity and (A3) 3-30wt%, preferably 5-20wt% propylene polymer having >=2.8dl/g intrinsic viscosity with (B) 0.02-2pts.wt., preferably 0.1-1.5pts.wt. ester of a 12-22C aliphatic saturated monofunctional carboxylic acid with a polyhydric alcohol, e.g. stearic acid monoglyceride, etc. |
